Temperature and concentration quenching of mid-IR photoluminescence in iron doped ZnSe and ZnS laser crystals

• Published in: Journal of luminescence Vol. 132; no. 3; pp. 600 - 606
• Main Authors: Myoung, NoSoung, Fedorov, Vladimir V., Mirov, Sergey B., Wenger, Lowell E.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01-03-2012; Elsevier
• Subjects: Concentration quenching; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Crystals; Diamagnetism, paramagnetism and superparamagnetism; Exact sciences and technology; Fe:II–VI crystals; Ii-vi semiconductors; Iron; Lasers; Luminescence; Magnetic permeability; Magnetic properties and materials; Magnetic susceptibilities; Mid-IR lasers; Nonmetals; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Photoluminescence; Physics; Quenching; Temperature quenching; Transitional metals; Zinc selenides; Mid-IR lasers; Temperature quenching; Transitional metals; Fe:II–VI crystals; Magnetic susceptibilities; Concentration quenching; Impurity density; Fe:II-VI crystals; Impurity cluster; Doping; Curie-Weiss law; Paramagnetism; Photoluminescence; Laser materials; Zinc selenides; Magnetic susceptibility; Zinc sulfide; Energy-level transitions; Temperature effects; Iron additions; Kinetics
• ISSN: 0022-2313; 1872-7883
• DOI: 10.1016/j.jlumin.2011.10.009

Concentration dependences of the mid-IR kinetic of luminescence at
5
E↔
5
T
2 transition in Fe:ZnSe and Fe:ZnS laser samples were studied in 14–300
K temperature ranges. Radiation lifetime in Fe:ZnSe samples measured using low doped samples with iron concentration 0.1×10
18
cm
−3 was estimated to be 57
μs. The magnetic susceptibility for higher doped (
C
Fe=38 and 112×10
18
cm
−3) Fe:ZnSe samples was found to consist of a paramagnetic Curie–Weiss behavior arising from the weakly interacting Fe
2+ ions and a diamagnetic ZnSe contribution plus a temperature-independent, field-dependent contribution possibly arising from very small amounts of aggregated Fe.
► Optical and magnetic characterization of iron doped ZnS/Se samples. ► Mid-IR photoluminescence quenching Fe:ZnSe and Fe:ZnS crystals. ► Emission cross-section of Fe
2+ ions in ZnSe. ► Magnetic susceptibility has field-dependent contribution arising from aggregated Fe.